The Ultimate Guide to Growing Beautiful Zinnia Flowers

Team McFly Sep 15, 2023
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Zinnia Flowers
Table of Contents
  1. How to Grow Zinnia Flowers
    1. Planting
    2. Care
    3. Harvesting
    4. Saving Seeds

How to Grow Zinnia Flowers

Zinnias are low-maintenance, drought-tolerant flowers that add vibrant color and cheer to any garden, patio, balcony, or deck. Not only that, but they attract pollinators as well!

Plant in full sun to maximize blooms and protect against fungal diseases. Zinnias require well-draining soil amended with organic matter; water regularly but avoid overhead watering.


Zinnia flowers are a garden favorite because they spread quickly and require minimal care. Plus, they add an eye-catching pop of color to any flower bed in the summertime.

These heat-loving Mexican natives are also attractive to pollinators and hummingbirds. In addition, they make lovely cut flowers, border perennial flower beds, or companion plants for vegetables like beans or chard.

Planting zinnias requires sowing seeds directly into the ground in full sun with well-drained soil. For spring plantings, seeds should be planted approximately 60 days before the last frost date.

Zinnias can be susceptible to disease, especially powdery mildew. So ensure your garden gets plenty of air circulation and select resistant varieties. You could also apply neem oil as a treatment for diseased foliage.

How to grow Zinnia Flowers


Zinnia flowers are among the most beloved garden plants due to their ease of care, heat tolerance, and stunning colors and shapes.

Zinnias thrive in warm, sunny areas with full sun and soil amended with organic matter such as compost. They are drought tolerant and need little additional water during growth periods except for hot, dry weather.

Zinnias make for an attractive cut flower garden choice, too. Their larger blooms attract nectar-seeking butterflies; the taller varieties provide great landing pads for hummingbirds.

Deadhead spent flower heads regularly to encourage new blooms. In addition, zinnias are especially vulnerable to powdery mildew, so keeping their foliage well hydrated and providing ample air circulation are key methods for avoiding this disease.

Zinnia Flowers with butterfly


Zinnias are a favorite in home gardens due to their easy care and vibrant hot-palette colors. In addition, these flowers are heat- and mildew-resistant - perfect for growing in hot climates.

Zinnia flowers consist of disk flowers (the center) and ray flowers (the petals). Unfortunately, some disk flowers can be sterile, so you must manually pollinate them to guarantee seed production.

Once your zinnia flowers have been hand-pollinated, you can collect their seeds. Be sure to save a few from each variety for genetic diversity.

Once you harvest your zinnia flower heads, please place them in a paper bag or other breathable container to dry completely before separating the seeds from their housings. Label each seed head so you don't mix them up next time.

saving seeds

Saving Seeds

Zinnia seeds can often be purchased at your local grocery store or flower shop, but saving your own is an economical way to save money and enjoy your flowers for years. When collecting seeds from your garden, carefully remove spent blooms with gloved hands.

Once the heads have dried on your zinnia plant, gently pull off its petals to reveal arrow-shaped seeds within them. These seeds will germinate and produce new flowers for the next season.

Once you've harvested some dried seed pods, store them in a plastic Ziploc bag or sealed envelope to keep them dry and moisture-free. You may also store them in your freezer or refrigerator to extend their shelf life.

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Table of Contents
  1. How to Grow Zinnia Flowers
    1. Planting
    2. Care
    3. Harvesting
    4. Saving Seeds